gilbert



A. c. GILBERT. ToY ELECTRIC MOTOR.

APPLICATION FILED APR- B lgl. 1,323,045. Patented Nov. 25, 1919.

2 SHEETS-SHEET l.

A. C. GILBERT.

OY ELECTRIC MOTOR.

APPLICATION FILED APR. IB. 191s.

1,328,045. Patented Nov. 25, 1919.

2 SHEETS-SHEET 2.

NVAENTOR.

Wf- @www UNITED sTATEs PATENT oEEIoE.

`ALFRED C. GILBERT, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE A.C..GILBERT COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OFCONNECTICUT.

TOY ELECTRIC MOTOR.

Specification of Letters Patent. Pafented NOV, 25, 1919,

Application led April 18, 1916. Serial No'. 91,976.

To all whom t may concern.'

Be it known that I, ALFRED C. GILBERT, a citizen of the United States,residing in the city and county o f New Haven and State of Connecticut,have invented certain new and useful Improvements in Toy ElectricMotors, of which the following is a full, clear, and exact description.

This invention relates rto toy velectric motors, and more particularlyto a toy motor having a pole changing switch, by means of which it maybe reversed, although in some aspects of the invention this is not anessential feature.

One of the primary objects of the invention isto provide a toy motorhaving an improved form of base, which is detachable from the motor sothat in using the motor for operating various toy models, such aselevators, bridges and the like, the motor proper may be used with orindependently of the base as desired. In the case where a reversingmotor is required, the motor proper is provided with a base having areversing switch. Where a control of the speed of the motor isdesiredythe base may" be equipped with a rheostat in place of thereversing switch.

My improved motor is therefore adapted to fulfil many differentconditions when used as a toy, and furthermore the construction of theseveral parts is very simple so that they can be readily assembled andtaken apart. l

To these and other ends, 'the invention consists in the novel featuresand combinations of parts to be hereinafter described and claimed.

In the accompanying drawings,

Figure 1 is a side elevation of a toy motor embodying my improvements;

Fig. 2 is an end elevation thereof;

Fig. 3 is an4 end elevation, partlyin section, on line 3-3 of Fig. 1;

Fig. 4 is a bottom view of the base or lfoundation plate Fig. 5 is a topView of the base, the screws securing the motor proper to the base beingshown in section;

Fig. 6 is a detail section on line 6-6 of Fig. 4;'and y Fig. 7 is adetail of the reversingr switc partly in section on line 7-7 of Fig. 3.

The toy motor installation Shown in the drawings comprises an electricmotor proper A, and a detachable base or foundation plate B for saidmotor. The main parts of the motor A are for the most part of usualconstruction. The motor has side plates or frames 10 tied togethe byrods 11, and supporting a laminated field magnet core l2 of horseshoetype. Between the poles 13 of the field magnet, an armature 14 isrotatably mounted in the usual manner, said armature being fixed to ashaft 15, journaled 1n the side plates or frames 10. The field magnet l2is energized by a coil 16 wound around the lower intermediate portionthereof between insulating plates 17. In the form shown, the armaturehas three poles, each wound in the usual manner, the winding of eachpole being connected toa corresponding segment of a suitable commuttor(not shown), coacting with the usual brushes 18, 19. Binding posts 20,21 mounted on one of the side plates 10 are adapted to be connected witha battery or other source of current in the usual manner.

The base B is preferably constructed as follows: The main part isstamped up from a single sheet metal blank so as to present a cup-shapedplate 22 having a lateral supporting flange 23 at the lower edgethereof. The base is entirely open at the bottom but closed at the topby means of a plate or insert 24 of fiber or other insulating material.f The base plate has an aperture at the top, as shown at 25, and theinsulating plate I by screws 26 having nicked heads and nuts 27. Thesescrews are also instrumentahin securing the motor A to the base, forwhlch purpose integral lugs 28 bent outward from theside plates 10 atthe corners of the motor are provided with perforations which areadapted to register with the openings in the base plate 22 andinsulating plate 24 through which the Screws 26 pass. Fig. 3 shows howthe parts are assembled, and how each screw passes through anoutstanding lug of the motor, a portion of the base plate 22, and acorner portion of the insulating plate 24. When the motor proper isdetached from the base, the screws 26 may still serve as a means forsecurlng the insulating plate to the main base plate.

Preferably, the aerea .Openings are a11 1Q cated at the corners of asquare, so that the parts may be conveniently secured to-4 gether invarious angular adjustments.

In the particular form shown, the insulating plate 24 serves as amounting for a pole changing switch for the motor, although it may alsoserve as a mounting for a rheostat or the like. In the exampleillustrated, the construction of the pole changing switch is as follows:In the center of the insulating plate, a depending post 29 is mounted bymeans of nuts 30, 31, so as to extend downward within the hollow base,and onthis post a switch member or distributer 32 is swiveled. Thisswitch member may comprise an upper disk 33 .of liber or otherinsulating material, two spaced arcshaped segments 34, 34a placedoppositely to each other, and concentrically with respect to the post29, and an operating lever 35 for the swinging switch member, comprisinga plate portion 36, between which and the disk 33 the segments 34, 34alare secured inplace. The disk 33 and its cooperating clamping portion 36(alsoof insulating material) are likewise connected by pins 37 locatedin the spaces between the segments. At four points around the switchmember or segmental drum 32, Contact plates 38,V 39, 40 and 41 arearranged. ple, to the contact plate 38, this is formed of an 4L-shapedsheet metal plate having its upper end 38a passing through a slot in theinsulating plate 24, said upper end being bent laterally and clamped tosaid plate by means of a screw 381. The contact plates 39, 40 and 41 areprovided with similar upper bent ends 39, 40a and 41*t secured in placeby screws 39h, 40h and 41"', which are also adapted to act asv bindingposts. Near each screw a suitable perforation is provided for leading awire through the'platexto the corresponding binding post.

The arrangement is such that when the lever 35 is swung into theposition shown in Fig, 4, connection will be established between thebinding post 3 8b and the binding post 40" by way of the contact plate38, segment 34a and4 contact plate 40, both of which contact plates maycontact with this segment in this adjustment.` In a similar manner,connection Ais simultaneously established between the binding posts 39band 41".

When, however, the operating lever 35 Ais swung to the other limit ofits movement,

the parts assume the'positions shown in Fig. 7, and it will be observedthat the binding post 38b is connected with binding post 39",

` whereas binding post 40" is connected with binding post-41". Theoperating lever 35 is limited inits movement by passing outward througha slot 35 in the basa which. permits said 'operating lever to have therequisite travel and arrests it in the required positions. When thelever occupies a cgntral Referring, for exam-v position ,in its slot,the current is cut off by I have not considered it necessary to describein detail the particular wiring by which reversal of the motor may beobtained by operation of the switch. The motor shown is a series motor,and reversal is obtained by changing the direction of the current flowthrough the armature. .If the binding posth'20 is considered thepositive pole of the motor, in the switch adjustment v shown inI Fig. 7,the current will pass from this pole to the binding post 38h, thence tothe binding post 39h, thence to brush 18, through the armature to thebrush 19, thence to binding post 40b of the reversing switch, thence tobinding post 41b,thence through the field winding 16', and out throughthe bindingpost 21. On the other hand, when the'reversing switchoccupies the .position shown in Fig. 4, the current Vpasses from bindingpostA 20 vto binding post 38h, thence to binding post 40", thence tobrush 19,

through the armature to brush 18, thence to binding post 39", thence tobinding ost 41h, and thence outward through the fie d windin Wariouschanges in the details of the construction may be adopted withoutdeparting from the scope ofthe invention as defined in the claims. f

I do not claim .herein the electric switch per se, as the same isclaimed in my divisional application, Serial No. 203,976, filed Nov'.26, 1,917.

What I claim is: 1. The combination with a toy electric motor, of ahollow base supporting said motor' and having an opening in the upperpart thereof, a plate covering said opening, means for detachablysecuring said plate to the base, and a switch for the motor mountedonsaid plate, said opening 'provided -to permit convenientaccess to saidplate ,and to the terminals of the switch mounted thereupon;substantially as described.

.said eutaway portion, and fastening screws passing through said lugperforations, said base perforations, and through perforations in saidplate; substantially as described.

3. The combination of an electric motor, a separate base supporting saidmotor and having an opening beneath the motor, a member of insulatingmaterial closing said opening, and a controlling device for the motormounted on said insulating member and projecting downward therefrom intothe base, said opening provided to permit convenient access to saidinsulating member and the controlling device mounted thereupon.

4. The combination with an electric motor, of a separate hollow basetherefor having an opening in the upper part thereof beneath the motor,a plate of insulating material adapted to cover said opening, a switchfor the motor mounted on said plate and 'bodil carried thereby, andmeans for detacha ly securing the motor, base and insulating platetogether.

5. The combination of an electric motor, a hollow base member therefor,an insulating plate having a switch mounted thereon, said motor, basemember and insulating plate all havin@ registering openings, anddetachable fstenings extending through said registering openings forsecu'ring all said parts detachably together.

The combination of an electric motor, a base member on which said motoris superimposed, said base member being hollow and open at the top, aninsulating plate closing the open top portion of said base member andhaving a motor controlling device mounted thereon, and means fordetachably securing the motor, base member and insulating platetogether, each of said parts being readily separable from the otherswhen said fastening means is removed.

7. The combination of an electric motor, a base member on which saidmotor is superimposed, said base member being hollow and open at thetop, an insulating plate inclosing the open top portion of said basemember and having a motor controlling device mounted thereon, andfastening screws for detachably securing the motor, base member andinsulating plate together, each of said parts being readily separablefrom the others when said fastening screws arev removed.

In witness whereof I lhave hereunto set my hand on the 13th day ofApril, 1916.

ALFRED C. GILBERT.

